Can investors with irrational beliefs be neglected as long as they are rational on average ? Does unbiased disagreement lead to trades that cancel out with no consequences on prices, as implicitly assumed by the traditional models ? We show in this paper that there is an important impact of...

Using a ten-year sample of IPOs undertaken on Euronext with various mechanisms, our study examines the relationship between initial returns and post-listing liquidity, and tests whether it is influenced by ownership structure and information asymmetry. According to most of our findings,...

Our study investigates by which channels IPO underpricing impacts post-listing liquidity. Using a sample of IPOs undertaken on Euronext with diverse mechanisms, we show that when ownership structure is not influenced by initial underpricing, this underpricing still has a positive impact on...

Les actifs financiers sûrs sont au cœur de la finance de marché aujourd'hui. L'aptitude de tels actifs à protéger la valeur de l'épargne et des avoirs financiers, à servir de garantie à des prêteurs, à permettre aux entités souveraines de se financer ou encore aux banques centrales de...

We develop a dynamic model in which traders have differential information about the payoff of the risky asset and trade the risky asset with proportional transaction costs. Firstly, trading volume provides useful information on the asset fundamental value which cannot be inferred from the...

Since the seminal paper of Ghirardato, it is known that Fubini Theorem for non-additive measures can be available only for functions defined as “slice-comonotonic”. We give different assumptions that provide such Fubini Theorems in the framework of product σ-algebras.

In this paper, we study the optimal portfolio selection problem of weakly informed traders in the sense of Baudoin \cite{Baudoin_2002}. Instead of considering only expected utility maximizers, we also take into consideration different preference paradigms. In particular, we analyze a...